package com.bw.controller;

import com.alibaba.fastjson.JSON;
import com.bw.entity.User;
import com.bw.mapper.UserMapper;
import org.spring.kun.common.Md5Utils;
import org.spring.kun.common.TokenUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.util.concurrent.TimeUnit;

@Controller
public class LoginController {


    @Autowired
    UserMapper userMapper;

    @Autowired
    RedisTemplate redisTemplate;

    @RequestMapping("/loginPage.do")
    public String loginPage() {

        return "login";
    }

    @RequestMapping("/login.do")
    public String login(@Valid User loginUser, BindingResult result, Model model, HttpServletResponse response) {
        if (result.hasErrors()) {

            model.addAttribute("error", result.getAllErrors().get(0).getDefaultMessage());

            return "login";
        }
        User userDB = userMapper.selectByPhone(loginUser.getPhone());
        if (userDB == null) {
            model.addAttribute("error", "用户不存在");

            return "login";
        }

        String loginUserPassword = loginUser.getPassword();

        String salt = userDB.getSalt();
        String password = userDB.getPassword();

        String md5String = Md5Utils.getMD5String(loginUserPassword + salt);


        if (!md5String.equals(password)) {
            model.addAttribute("error", "密码错误");

            return "login";
        }
        // 加密用户 得到token 把token放入 cookie 把cookie返回给浏览器
        TokenUtils.responseTokenByCookie(userDB, response, 30);

        redisTemplate.opsForValue().set(userDB.getPhone(), JSON.toJSONString(userDB),30, TimeUnit.MINUTES);


        return "redirect:list.do";
    }
}
